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Windows 7: Transfer Rate is decreasing

My backups are saved on my external HDD
Its about 450GB, when I copy/move the files from my External HDD to Local Disk
The transfer rate is 28.0MB/sec -> 27.9MB/sec -> 27.8MB/sec .....->8.0MB/second?
every second the transfer rate is decreasing?
Is it Normal?

Exactly what is your backup mechanism. The transfer speed of many small files will be less than a large file where sequential transfer speeds should be higher.
Also, have a kook at how fragmented both drives are.
PS: I suggest you update your specs I doubt you have 400GB+ memory.

Exactly what is your backup mechanism. The transfer speed of many small files will be less than a large file where sequential transfer speeds should be higher.
Also, have a kook at how fragmented both drives are.
PS: I suggest you update your specs I doubt you have 400GB+ memory.

I noticed that
How to update my specs?
What if I compress the files on External HDD then copy the compressed file to local Disk?

First i sugest you to disable your antivirus . secondly I think your external Hdd cable is slower than your local hard drive, so it may cause of limit data transfer speed
There may be the initial estimates are not correct, or that there was compression coming in to play that's not applicable on the whole drive

First i sugest you to disable your antivirus . secondly I think your external Hdd cable is slower than your local hard drive, so it may cause of limit data transfer speed
There may be the initial estimates are not correct, or that there was compression coming in to play that's not applicable on the whole drive

HDDs function is short bursts. It is normal for the transfer rates to decrease as the time progresses. That is just how they function. Fill up their caches and slow down. On long jobs it can get very low, depending upon how busy the drive is.

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